It frequently aborts DIS event when particle hit particular parts of FEMC. FEMC configuration: https://github.com/ECCE-EIC/macros/blob/master/common/G4_FEMC_EIC.C#L59
This problem appears can be reproduced by this simple change in the macro, i.e. launching particle from the problematic location in FEMC. It would be interesting to know what G4 tracking is thinking with display and /tracking/verbose 3: https://github.com/ECCE-EIC/macros/commit/d53273dab5efa57861233cd16d03cf5f723194b3 and here is what I get:
-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : GeomNav1002
issued by : G4Navigator::ComputeStep()
Stuck Track: potential geometry or navigation problem.
Track stuck, not moving for 10 steps.
Current phys volume: 'hEcalTower'
- at position : (-200.2220723491507,307.3120623806979,3278.258928659777)
in direction: (0.4615866170446841,0.08002612425889047,0.8834781346481331)
(local position: (2.727927650849352,-6.337937619302068,2.700892945490978))
(local direction: (0.4615866170446841,0.08002612425889047,0.8834781346481331)).
Previous phys volume: 'hEcalTower'
Likely geometry overlap - else navigation problem !
*** Trying to get *unstuck* using a push - expanding step to 1e-07 (mm) ... Potential overlap in geometry !
*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------
-------- EEEE ------- G4Exception-START -------- EEEE -------
*** G4Exception : GeomNav0003
issued by : G4Navigator::ComputeStep()
Stuck Track: potential geometry or navigation problem.
Track stuck, not moving for 25 steps.
Current phys volume: 'hEcalTower'
- at position : (-200.2220716567705,307.3120625007367,3278.258929984995)
in direction: (0.4615866170446841,0.08002612425889047,0.8834781346481331)
(local position: (2.727928343229479,-6.337937499263262,2.700894270708886))
(local direction: (0.4615866170446841,0.08002612425889047,0.8834781346481331)).
Previous phys volume: 'hEcalTower'
Likely geometry overlap - else navigation problem !
Track *abandoned* due to excessive number of Zero steps. Event aborted.
*** Event Must Be Aborted ***
G4Track (0xb73228d0) - track ID = 124, parent ID = 115
Particle type : gamma - creator process : eBrem, creator model : eBrem
Kinetic energy : 1.32672 MeV - Momentum direction : (0.461587,0.0800261,0.883478)
Step length : 1 Ang - total energy deposit : 0 eV
Pre-step point : (-200.222,307.312,3278.26) - Physical volume : hEcalTower (G4_AIR)
- defined by : Transportation - step status : 1
Post-step point : (-200.222,307.312,3278.26) - Physical volume : hEcalTower (G4_AIR)
- defined by : compt - step status : 7
*** Note: Step information might not be properly updated.
-------- EEEE -------- G4Exception-END --------- EEEE -------
